A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5960-00-761-9098
NSN 5975-01-178-7499
NSN 5855-01-205-7030
NSN 5975-01-100-1063
NSN 6620-01-281-6386
NSN 6220-01-430-0442
NSN 4140-01-399-2472
NSN 5905-00-363-3590
NSN 6240-01-106-2447
NSN 5996-01-587-8616
NSN 5990-00-910-5875
NSN 5998-00-437-5847